tyre bead

例句：

1. 1. The car'styres were worn out after a longjourney.
   长途旅行后，这辆车的轮胎磨损了。
2. 2. The driver carefully checked thetyre bead before starting theengine.
   司机在启动发动机前仔细检查了轮胎胎面。
3. 3. The new tires aredesigned to improve the handling and safety ofthe vehicle.
   新轮胎的设计旨在提高车辆的操控性和安全性。